https://www.mineral-bosse.de
https://www.mineralbox.biz
https://www.mineraliengrosshandel.com
https://www.edelsteine-neuburg.de
'._('einklappen').'
 

Khomyakovite

Collectors Summary

Hardness (Mohs) 5.5
Cleavages keine
Fracture uneben
Crystal System trigonal, R3m

Chemism

Chemical formula

Na12Sr3Ca6(Fe2+Mn2+)3Zr3(W,Nb)[(OH,Cl)|Si0.5(O,OH)2|Si3O9|Si9O27]2

Chemical composition

Calcium, Chlor, Eisen, Mangan, Natrium, Niob, Silicium, Strontium, Zirconium, Sauerstoff, Wasserstoff, Wolfram

Unit weight: 3508.6808801 u; Number of atoms in the formula: 136.5

Info

Empirical formula:

Na12Sr3Ca6(FeMn)3Zr3(W0.75Nb0.25)[((OH)0.75Cl0.25)Si0.5(O0.75(OH)0.25)2Si3O9Si9O27]2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.07

2.5

1.83

1.0079470

2.5198675

Oxygen

O

35.34

77.5

56.78

15.9994300

1,239.9558250

Sodium

Na

7.86

12

8.79

22.9897702

275.8772424

Silicon

Si

20.01

25

18.32

28.0855300

702.1382500

Chlorine

Cl

0.51

0.5

0.37

35.4532000

17.7266000

Calcium

Ca

6.85

6

4.40

40.0784000

240.4704000

Manganese

Mn

4.70

3

2.20

54.9380499

164.8141497

Iron

Fe

4.77

3

2.20

55.8452000

167.5356000

Strontium

Sr

7.49

3

2.20

87.6210000

262.8630000

Zirconium

Zr

7.80

3

2.20

91.2242000

273.6726000

Niobium

Nb

0.66

0.25

0.18

92.9063820

23.2265955

Tungsten

W

3.93

0.75

0.55

183.8410000

137.8807500

Analysis wt%

SiO2 : 43.70, WO3 : 3.80, Nb2O5 : 1.33, ZrO2 : 10.62, FeO : 4.33, MnO : 1.63, CaO : 10.42, SrO : 8.45, Na2O : 11.35, K2O : 0.52, Cl : 0.67, H2O : 0.87 (Ref: Canadian Mineralogist 99)

Strunz 9th edition incl. updates

9.CO.10

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
O: ~[Si9O27]18- neuner-Ringe
10:Eudialyt-Gruppe

Lapis Classification

VIII/E.25-060

VIII: SILIKATE
E: Ringsilikate
25: Neunerringe + Dreierringe; Eudialyt-Gruppe

Classification by Hölzel

9.CG.170

9: SILICATES
C: Cyclosilicates
G: ~[Si3O9]6-- + ~[Si9O27]18--Rings Eudialyte-Group
1: Eudialyte-Group - c=30, Fe- Series

Dana 8th edition

64.01.01.04

64: Cyclosilicates Cyclosilicates
01: Cyclosilicates Cyclosilicates Cyclosilicate Rings with Other Anions and Insular Silicate Groups with mixed ring types
01: Eudialyte Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Eudialyte group

Optical Properties

max. Birefringence

0.003

Birefringence chart\! Khomyakovite title=Birefringence chart Khomyakovite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.628

RI value γ / ε

1.625

Ri mean

1.627

2V angle

Uniaxial (-)

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

160

Space Group

R3m

Cell parameters a (Å)

14.296

Cell parameters b (Å)

-

Cell parameters c (Å)

30.084

Cell parameters a/b or c/a

2.104

Cell parameters c/b

-

Z

3

Volume (ų)

5324.702

X-Ray Powder Diffraction

11.50(90),
9.53(70),
6.450(50),
6.070(50),
5.735(50),
3.406(50),
2.980(100),
2.856(80)

XRD chart Khomyakovite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.14 (berechnet)

3.282 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

Preface

Author (Name, Year)

Johnsen & Gault & Grice & Ercit, 1999

References

Canadian Mineralogist 37 (1999), 893

IMA group assignments


 
 
Na15[(Ce1.5Na1.5)Mn3]Mn2Zr3☐Si[Si24O69(OH)3](OH)2·H2O
trigonal
R3

 
 
(H3O)8(Na, K, Sr)5Ca6Zr3Si26O66(OH)9Cl
trigonal
R3

 
 
Na11-12(Na,Ce)3Ca6Mn3Zr3Nb[(OH)3|CO3|(Si3O9)2|(Si9O27)2·SiO]·H2O
trigonal
R3m

 
 
Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9
trigonal
R3m

 
 
Na15Ca6(Fe2+,Mn2+)3Zr3[(Cl,OH)|Si(O,OH,H2O)2|Si3O9|Si9O27]2
trigonal
R3m

 
 
Na11Ca9(Fe3+,Fe2+)2Zr3Nb(Si25O73)(OH,H2O,Cl,O)5
trigonal
R3m

 
 
Na15Ca6Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(F,Cl)2
trigonal
R3m

 
 
Na12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2·H2O
trigonal
R3m

 
 
(Na,Ca)10Ca9Fe2Zr3NbSi25O72(OH)3CO3·H2O
trigonal
R3m

 
 
(Na,H3O)15(Ca,Mn)6Fe23+Zr3-4[Cl|{Si3O6(O,OH)3}2|(Si9O27)2·0-1 SiO] ·2-3 H2O
trigonal
R3m

 
 
(H3O,Na)14Ca6Mn2Zr3Si26O72(OH)2·3H2O
trigonal
R3m

 
 
Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(OH)3(CO3)·H2O
trigonal
R3m

 
 
Na15(Ca,Ce,La)6(Mn2+,Fe2+)3Zr3Nb[O|(F,Cl,OH)|Si3O9|Si9O27]2·2H2O
trigonal
R3m

 
 
Na12Sr3Ca6(Fe2+Mn2+)3Zr3(W,Nb)[(OH,Cl)|Si0.5(O,OH)2|Si3O9|Si9O27]2
trigonal
R3m

 
 
Na14Ca6Mn3Zr3[Si26O72(OH)2](H2O,Cl,O,OH)6
trigonal
R3m

 
 
Na12Sr3Ca6(Mn2+,Fe2+)3Zr3(W,Nb)[(OH,Cl)|Si0.5(O,OH)2|Si3O9|Si9O27]2
trigonal
R3m

 
 
Na9(Ca,Na)6Ca6Fe2Zr3☐Si25O72(CO3)(OH)4
trigonal
R3m

 
 
Na14Ca6Zr3[Na2(Fe,Mn)][Si26O72](OH)2(H2O1.0Cl0.6S2-0.5)(OH,H2O)2.5
trigonal
R3m

 
 
Na9Sr3[(H2O)2Na]Ca6Mn3Zr3NbSi(Si24O72)O(OH)3 (CO3)·H2O
trigonal
R3m

 
 
Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2
trigonal
R3

 
 
Na15Ca3Fe3(Na,Zr)3Zr3Nb<0.5[(Cl,OH)|(Si3O9)2|(Si9O27)2·SiO]·3(OH,H2O)
trigonal
R3

 
 
Na27K8Ca12Fe3Zr6Si52O144(OH,O)6Cl2
trigonal
R3m

 
 
(H3O)12Na3(Ca3Mn3)(Na2Fe)Zr3Si[Si24O69(OH)3](OH)Cl⋅H2O
trigonal
R3

 
 
Na15(Ca3Mn3)(Na2Fe)Zr3Si26O72(OH)3·H2O
trigonal
R3

 
 
Na8Mn2+3Ca6(Fe3+,Mn2+)3Zr3NbSi24(Si,☐,Ti)O72(O,OH)3Cl·4H2O
trigonal
R3m

 
 
Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2
trigonal
R3m

 
 
Na12Ca5(Ce,La,Y,Ca)Zr3(Zr,Nb)(Fe,Mn)3[Si9O24-26(OH)1-3]2[Si3O9]2Cl
trigonal
R3m

 
 
(H3O)7(Na,K)5(Ca,Sr,Mn)6Zr3[Si3O7(O,OH)2]2[Si9O23(O,OH)4]2[SiNaFe(Zr,Ti,Al,Nb)◻]Cl1.5(O,OH)
trigonal
R3m

 
 
Na14Ca4(Mn,Ca)2Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Mn,Al,Ti)3(Na,Ce,La,Y,Mn)(Na,H2O,K,Sr)(OH)7-8
 
 

 
 
Na16Ca6(Mn,Ce)3Zr3(Si3O9)2(Si9O27)2(OH,Cl)4 · nH2O
trigonal
R3m

 
 
Na12(Ca,Mn)6(Sr,Na,K)3(Fe,Mn)3(Zr,Nb)4Si25O66(OH,Cl)11
trigonal
R3m

 
 
Zr4(Ca,Na,Mn,Fe)6(Fe,Mn,Ti)3Na17Si25O75(Al,Nb,Ti)Cl(OH)4.H2O
trigonal
R3m

 
 
Na14(Na,Ca,Ce)(Mn,Ca,Ce)[Fe1.55(Zr,Na)(◻,Ti,Nb)]Zr3(Si,Al)(Si3O9)2(Si9O27)2(OH,O)4(F ,Cl) · H2O
 
 

 
 
Na12(Na,K,Mn,Sr)2Ca5(Ca,Mn)(Zr,Hf)3(Fe,◻,Ta)3(Si,Nb,W)(Si,Al,Ti)Si24O72(OH,O)3.5Cl · 1.2H2O
trigonal
R3m

 
 
Na16Ca6(Fe,Mn)3Zr3(Ti,Nb)Si26O72FCl0.5 · nH2O
trigonal
R3m

 
 
[(H3O)9.32Na5.86K0.53Ba0.36Sr0.15][Ca5.22Sr0.49Ce0.16Mn0.13][Zr2.42Ti0.54Hf0.02Nb0.02][Na1.48(Fe0.10(H2O)0.1)][Si1.0(OH)1.0][Si0.44Al0.06(OH)0.50][Si3O9]2[Si9O26.25(OH)0.75]2Cl1.0·1H2O
 
 

 
 
[(H3O)9.26Na2.12K1.20Ba0.46Sr0.48][Ca5.76Ce0.24][Zr2.92Ti0.08][Na0.62(Fe0.23Mn0.11(H2O)0.34)][(Si0.57)(Si0.21Al0.19Nb0.03)(OH)1.44][(Si0.45)(Ti0.21)(Si0.34)(O,OH)0.34(OH)1.08][Si0.19(OH)0.57] [Si3O9]2[Si9O27]2Cl1.05·0.8H2O
 
 

 
 
[(H3O)10.85Na3.3Sr0.48K0.21Ce0.2Y0.1Ba0.04][Ca2.1Na0.9][Ca2.4Na0.3Mn0.3][Zr2.97Hf0.03][Fe1.32Mn0.6O1.44(H2O)1.80][(Ti0.22Nb0.02)(Si0.23)(Si0.19)(OH)0.42][(Si0.44)(Nb0.1Al0.1)(Nb0.0)(OH)0.44][Si3O9]2[Si9O26.01(OH)0.99]2Cl1.0·1.19H2O
 
 

 
 
[(H3O)11.61Na3.0Sr0.63Ce0.22K0.2Y0.05Ba0.03][Ca2.25Na0.75][Ca2.4Mn0.6][Zr2.98Hf0.02][Fe3+0.66Mn0.3Mn0.3(H2O)1.43(OH)0.79][(Ti0.16Al0.07Mg0.03)(Si0.17)(OH)0.17][(Si0.50)(Si0.31)(Nb0.18Ta0.01)(OH)0.81][Si3O9]2[Si9O26.14(OH)0.86]2Cl1.1·0.63H2O
 
 

 
 
[(H3O)5.58Na5.25Ce0.63K0.3Y0.19Sr0.05][Ca3][Ca1.71Mn1.29][Zr2.96Hf0.04][(Fe3+1.0Fe2+0.35)(Fe3+0.57)(Zr0.32Mn0.22)(O,OH)1.77(H2O)1.34][(Zr0.18)(Si0.5)(OH)0.5][(Nb0.41)(Al0.2Ti0.05)(Si018)(OH)0.93][Si3O9]2[Si9O26.28(OH)0.72]2Cl0.2·1.45H2O
 
 

 
 
[(H3O)8.53Na3.51Sr0.55Ce0.45Y0.3Ba0.15K0.06][Ca2.25Sr0.45Na0.3][Ca2.4Mn0.6][Zr2.97Hf0.03][(Mn0.64Fe0.38)O0.3(H2O)0.72][(Si0.49)(Si0.41)(Nb0.1)(OH)0.9][(Si0.29)(Si0.2)(Ti0.1Mg0.07Nb0.02)(OH)1.06][Si3O9]2[Si9O26.52(OH)0.48]2·2.12H2O
 
 

 
 
Na15(Ca3Mn3)Zr3(Fe,Zr)3SiSi(Si3O9)2(Si9O27)2O2(OH,F,Cl)3 · 2H2O
 
 

 
 
Na15Ca3(Mn,Fe)3Zr3(Zr,Na)3(Si,Nb)(S,Ti,Si)(Si3O9)2(Si9O27)2(O,OH)5(Cl,F,H2O)
 
 

 
 
Na33Ca12Zr6 Mn3(Mn,Nb,Ti)2Si50O132(O,OH)12(OH,H2O,Cl)10
 
 

 
 
[Na,(H3O)]15(Ca3Mn3)Na3Zr3(Si,Ti)[Si25O72OH](OH)2 · 2H2O
 
 

 
 
Na14Ca5(Mg,Ca,Mn)Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Zr)3(Mn,Na,Ce,La,Y)(Na,H2O,K,Sr)(OH)4-5(OH,Cl)
 
 

 
 
Na29Ca12Zr6[Si48O132(O,OH)12]{[Na]4[Si]2}{[Mn]3[Mn,Nb,Ti]2}(OH,H2O,Cl)10
trigonal
R3m

 
 
Na37Ca10Mn2FeZr6Si50(Ti,Nb)2O144(OH)5Cl3 · H2O
trigonal
R3m

 
 
(Na,☐)12(Ce,Na)3Ca6Mn3Zr3NbSi25O73(OH)3(CO3)·H2O
trigonal
R3m

Refresh list

Actuality: 08. Jul 2024 - 23:01:13

Other languages

German

Khomyakovit

Spanish

Khomyakovita

French

Khomyakovite

English

Khomyakovite

Russian

Хомяковит

CNMNC (IMA)-Number

IMA 1998-042

CNMNC symbol

Symbol

Kmy

Locations with GPS information

IDs

GUSID (Global unique identifier short form) sGQ3WLDba0qJhZlcMimQaw
GUID (Global unique identifier) 583764B0-DBB0-4A6B-8985-995C3229906B
Database ID 1938